So you are basically taking a topo map, coloring it in, possibly adding a couple tips to the map that someone else gave you... sounds like spot burning to me.
If anyone planned on seriously fishing any of the lakes, I am sure they would locate a regular lake topo map, and I would assume they would have a fish finder and knowledge on how to use it. I think if they were looking for the creekbeds, they could find them with a regular topo map... right?